DE2852582C2 - - Google Patents

Info

Publication number
DE2852582C2
DE2852582C2 DE2852582A DE2852582A DE2852582C2 DE 2852582 C2 DE2852582 C2 DE 2852582C2 DE 2852582 A DE2852582 A DE 2852582A DE 2852582 A DE2852582 A DE 2852582A DE 2852582 C2 DE2852582 C2 DE 2852582C2
Authority
DE
Germany
Prior art keywords
differential protection
resistor
phase
current
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE2852582A
Other languages
German (de)
English (en)
Other versions
DE2852582A1 (de
Inventor
Wayne E. Hyvarinen
Lloyd J. Lima Ohio Us Rosell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sundstrand Corp
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of DE2852582A1 publication Critical patent/DE2852582A1/de
Application granted granted Critical
Publication of DE2852582C2 publication Critical patent/DE2852582C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/06—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors
    • H02H7/062—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors for parallel connected generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/28—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Generators And Motors (AREA)
DE19782852582 1977-12-08 1978-12-05 Differentialschutznetzwerk fuer wechselstromsysteme mit parallel geschalteten generatoren Granted DE2852582A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/858,863 US4173774A (en) 1977-12-08 1977-12-08 Parallel AC electrical system with differential protection immune to high current through faults

Publications (2)

Publication Number Publication Date
DE2852582A1 DE2852582A1 (de) 1979-06-13
DE2852582C2 true DE2852582C2 (en, 2012) 1990-10-04

Family

ID=25329389

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782852582 Granted DE2852582A1 (de) 1977-12-08 1978-12-05 Differentialschutznetzwerk fuer wechselstromsysteme mit parallel geschalteten generatoren

Country Status (8)

Country Link
US (1) US4173774A (en, 2012)
JP (1) JPS5486742A (en, 2012)
CA (1) CA1130436A (en, 2012)
DE (1) DE2852582A1 (en, 2012)
FR (1) FR2411499A1 (en, 2012)
GB (1) GB2010030B (en, 2012)
IT (1) IT1101397B (en, 2012)
NL (1) NL7810816A (en, 2012)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644440A (en) * 1985-01-08 1987-02-17 Westinghouse Electric Corp. Redundant power supply arrangement with surge protection
US4731690A (en) * 1986-12-05 1988-03-15 Westinghouse Electrical Corp. Real load unbalance protection system for parallel variable speed constant frequency electrical power systems
US4728806A (en) * 1986-12-05 1988-03-01 Westinghouse Electric Corp. DC link variable speed constant frequency power source paralleling controls
US4905117A (en) * 1988-09-02 1990-02-27 Westinghouse Electric Corp. Circuit and method for DC content protection of parallel VSCF power systems
US5047890A (en) * 1990-03-12 1991-09-10 Westinghouse Electric Corp. Differential current protection circuits
US5523938A (en) * 1995-06-07 1996-06-04 Sundstrand Corporation Differential current fault protection for an AC/DC hybrid system and method therefor
US5805394A (en) * 1997-06-17 1998-09-08 Sundstrand Corporation Overvoltage protection circuit for a generating system utilizing a fault current sensing Circuit in combination with a shunting circuit
FR2769142B1 (fr) * 1997-09-29 1999-12-17 Sgs Thomson Microelectronics Circuit de protection associable a un filtre
US7016171B2 (en) 2001-02-01 2006-03-21 Hydro-Aire, Inc. Current fault detector and circuit interrupter and packaging thereof
US6583975B2 (en) * 2001-02-01 2003-06-24 Hydro-Aire, Inc. Aircraft applicable ground fault circuit interrupter
US7362551B2 (en) * 2001-02-01 2008-04-22 Hydro-Aire, Inc. Aircraft applicable circuit imbalance detection and circuit interrupter and packaging thereof
US6879224B2 (en) * 2002-09-12 2005-04-12 Agilent Technologies, Inc. Integrated filter and impedance matching network
CN110556781B (zh) * 2018-05-31 2022-08-12 上海航空电器有限公司 单通道多电飞机发电机控制器的联接汇流条差动保护功能结构
CN112965005B (zh) * 2021-02-04 2023-06-27 西安热工研究院有限公司 一种利用假负载校验差动保护极性的系统及方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1731955A (en) * 1926-08-05 1929-10-15 Gen Electric Protective arrangement
US2183537A (en) * 1938-01-03 1939-12-19 Westinghouse Electric & Mfg Co Pilot wire relaying
US2696573A (en) * 1951-04-09 1954-12-07 Reyrolle A & Co Ltd Electric signaling arrangement for protective or other purposes
US3160787A (en) * 1959-11-12 1964-12-08 Westinghouse Electric Corp Restraint operation relay employing zener diode
DE1151060B (de) * 1962-01-11 1963-07-04 Bbc Brown Boveri & Cie Differentialschutz
US3259802A (en) * 1963-06-03 1966-07-05 Gen Electric Ground fault responsive protective system for electric power distribution apparatus
US3377551A (en) * 1964-06-26 1968-04-09 Gen Electric Multiphase current transformer fault indicator
US3654516A (en) * 1971-04-07 1972-04-04 Westinghouse Electric Corp Change of current or voltage acutated protecting relay
US3729650A (en) * 1972-02-07 1973-04-24 R Cook Potential-current transformer device
JPS4932139A (en, 2012) * 1972-07-26 1974-03-23
CH577762A5 (en, 2012) * 1974-02-27 1976-07-15 Bbc Brown Boveri & Cie
US4089033A (en) * 1977-03-04 1978-05-09 General Electric Company High speed bus differential relay

Also Published As

Publication number Publication date
FR2411499A1 (fr) 1979-07-06
IT1101397B (it) 1985-09-28
GB2010030A (en) 1979-06-20
GB2010030B (en) 1982-06-23
IT7830600A0 (it) 1978-12-06
DE2852582A1 (de) 1979-06-13
JPS5486742A (en) 1979-07-10
US4173774A (en) 1979-11-06
CA1130436A (en) 1982-08-24
NL7810816A (nl) 1979-06-12

Similar Documents

Publication Publication Date Title
DE69503627T2 (de) Detektor zur überwachung der unversehrtheit einer erdverbindung eines elektrischen gerätes
DE2438354C3 (de) Mehrphasige Schutzanordnung für Anlageteile elektrischer Starkstromnetze
DE2852582C2 (en, 2012)
DE2906110A1 (de) Erddistanzrelais unter verwendung der phasenvergleichsmessung
EP0795222B1 (de) Verfahren zum erfassen eines erdkurzschlusses auf einer elektrischen energieübertragungsleitung
CH633917A5 (de) Schutzschaltungsanordnung fuer elektrische anlageteile, insbesondere fuer leitungsstrecken, sammelschienen und/oder transformatoren.
DE2523251C3 (de) Erdschlußschutzschaltung für ein Dreileiter-Einphasensystem
EP0131718B1 (de) Einrichtung zur Erfassung eines Erdschlusses in der Rotorwicklung einer elektrischen Maschine
DE2825881C2 (de) Anordnung zur Betriebsspannungsversorgung einer Fehlerstrom-Schutzschaltungsanordnung
DE1140634B (de) Sicherheitsschalter zum Schutze gegen elektrische Kriechstroeme
DE69018344T2 (de) Differentialschutzrelais.
DE2604311A1 (de) Phasenvergleichsrelais
DE2333930C3 (de) Netzschutzeinrichtung zur Fehlerfeststellung für ein Drehstromnetz
DE69131607T2 (de) Fehlerstromschutzschalter und Fehlerstromschutzsystem
DE2731453C3 (de) Erdschlußdetektor
DE4418124C2 (de) Vorrichtung zum Erkennen einer Isolationsverschlechterung an Stromversorgungsleitungen
DE60001279T2 (de) Erdfehler-schutzeinrichtung für die wicklung einer elektrischen maschine
DE2326724A1 (de) Schutzschaltungsanordnung fuer einen elektrischen leistungskreis mit einem hauptschalter
DE823752C (de) Einrichtung zum Schutz eines Teiles einer elektrischen Kraftanlage gegen innere Fehler dieses Teiles
DE2845993A1 (de) Fehlerstromschutzschaltungsanordnung
DE4213443C1 (de) Schaltungsanordnung zur Überwachung des Ausfalls von Sicherungen
DE68918573T2 (de) Differentialschutzrelais.
DE2840848A1 (de) Fluessigkeitspegel-ueberwachungssystem
DE2108020A1 (de) Steuerschaltung zur Verhinderung der Wiedereinschaltung eines Verbrauchers bei zu geringem Verbraucherwiderstand
EP1011183A2 (de) Fehlerstromschutzschaltungsanordnung

Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: SUNDSTRAND CORP., ROCKFORD, ILL., US

8328 Change in the person/name/address of the agent

Free format text: BEETZ, R., DIPL.-ING. DR.-ING. TIMPE, W., DR.-ING. SIEGFRIED, J., DIPL.-ING. SCHMITT-FUMIAN, W., PROF. DIPL.-CHEM. DR.RER.NAT. MAYR, C., DIPL.-PHYS.DR.RER.NAT., PAT.-ANWAELTE, 8000 MUENCHEN

8339 Ceased/non-payment of the annual fee